Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/15242
Title: | (K)over-bar* mesons in dense matter |
Author: | Tolós Rigueiro, Laura Molina, R. Oset Baguena, Eulogio Ramos Gómez, Àngels |
Keywords: | Teoria de camps (Física) Properties of specific particles General theory of fields and particles Specific reactions and phenomenology |
Issue Date: | 29-Oct-2010 |
Publisher: | American Physical Society |
Abstract: | We study the properties of (K) over bar* mesons in nuclear matter using a unitary approach in coupled channels within the framework of the local hidden gauge formalism and incorporating the (K) over bar pi decay channel in matter. The in-medium (K) over bar *N interaction accounts for Pauli blocking effects and incorporates the (K) over bar* self-energy in a self-consistent manner. We also obtain the (K) over bar* (off-shell) spectral function and analyze its behavior at finite density and momentum. At a normal nuclear matter density, the (K) over bar* meson feels a moderately attractive potential, while the (K) over bar* width becomes five times larger than in free space. We estimate the transparency ratio of the gamma A -> K+K*(-) A` reaction, which we propose as a feasible scenario at the present facilities to detect changes in the properties of the (K) over bar* meson in nuclear medium. |
Note: | Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevC.82.045210 |
It is part of: | Physical Review C, 2010, vol. 82, núm. 4, p. 045210-1-045210-12 |
URI: | http://hdl.handle.net/2445/15242 |
Related resource: | http://dx.doi.org/10.1103/PhysRevC.82.045210 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Publicacions de projectes de recerca finançats per la UE |
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